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H. SWANN..

gEN. APPLICATIONFILED JULY3I. I918.

1 ,3 11,026. Y Patented J nly 22, 1919.

HARINGTON S'W ANN OF KEMERTON, NEAR TEWKESBURY, ENGLAND.

PEN.

Specification of Letters Patent. Patented July 22, v1919,

Application filed July 31, 1918. Serial No. 247,690.

To all whom it mag concern: Y

Be it known that I, HARINGTON SWANN, subject of the King of Great Britain, residing at Upper Court, Kemerton, near Tewkesbury, England, major retired, Kings Liverpool Regiment, have invented certain new and useful Improvements Relatin to Pens, of which the following is a speci ication.

This invention comprises improvements relating to pens and refers to attachments for ordinary pens to enable them to carry a much larger charge or supply of ink to avoid the constant interruption of writing for refilling the pen.

It is known to provide a clip part for embracing the pen and a shallow well or reservoir connected to the attachment clip or band for over-lying the slitted portion of.

the pen with the above object.

My improved device is of this character but I greatly simplify and cheapen its production by providing the reservoir wall itself with the means of mounting the device on the pen. For this purpose the rear wall is provided with a slit or with a punched out aperture, and the device may be mounted on the pen by passing the pen through the slit of the aperture in the back wall, so that the point of the pen passes under the front wall and thus the surrounding wall of the reservoir is positioned on an upper surface of the pen, and owing to its resilient nature the device clings to the surface of the pen to form the desired additional ink supply container.

If desired, I may form a slit on the front wall of the container to make the wall of a still more resilient nature, so as to insure a good fit on the pen. Any desired shape of resilient container may be employed such as circular, oval, triangular, or the like.

My improved device lends itself to easy production as it may be formed as a section cut off a rubber tube of suitable diameter by an inclined or transverse out. If desired, the cuts off the tube may be contrived so that one side of the section removed is of greater height than the other and the slit for receiving the pen may be formed in this higher wall so that the whole of the sur-' rounding wall whichis above the pen is of usual height.

Any particular method of manufacture may be followed which provides the flexible rubber or like ink container for mounting on ordinary pens to increase the ink supply taken up by the slit and usual slot in the pen. I

On the drawing Figure 1 isan elevation of a pen with the device mounted upon it.

Fig. 2 is a plan thereof.

Fig. 3 is a similar view to Fig. 1 showing a slight modification.

Fig. 4 is a side elevation of the device removed from the pen and drawn to a larger scale.

Fig. 5 is a rear elevation thereof.

Figs. 6 and 7 and 8, illustrate a method of manufacturing the device.

These drawings show at Figs. 1 and 2 the ink holding device amounted on an ordinary pen b. The pen shown is of a type having an ink slot 0 communicating with the feed slit (Z and the device is mounted on the pen adjacent to the slot 0. The means for mounting the device shown in this eX- ample is a horizontal slit 6, see Figs. L and 5 through which the pen is passed so that the portion below the slit forms a retaining band f embracing the pen.

At Fig. 3 and at Fig. 4 the additional slit 9 at the front is shown to render the bottom edge of the device of a still more yielding character so that it fits snugly around the surface of the pen.

Figs. 6, 7 and 8, illustrate a method of manufacture in which the device is formed as a section cut ofi a rubber or like tube of suitable diameter. Fig. 6 shows parallel inclined cuts which produce devices with surrounding walls of equal height, and as a result when the device is mounted on the pen the rear wall does not project so much above the pen as the front wall. This is not a disadvantage as the pen is inclined in writing to an extent which more than makes up for the above difference. In Fig. 7 the device is formed as a section cut by transverse cuts instead of inclined cuts across the tube.

If desired to have the upper edge of the wall substantially horizontal when the pen is inclined as in use, the sections can be cut so that one side is of greater depth than the other, see Fig. 8 and the slit 6 can be formed in the deeper side. In Fig. 8 alternate cuts are parallel but adj aoent cuts are of difierent inclinations to produce sections with one deeper side.

1. An attachment for pens consisting of an inclosing Wall of yielding material, a slit near one edge at one side of said Wall and a slit adjacent said edge at the opposite side of said Wall, one of said slits permitting, the device to be mounted on a pen and the other rendering the Wall at such edge more yielding to insure a snug fit on the pen.

2. An attachment for pens comprising an upstanding inclosing Wall of flexible yielding substance open at the top and communicating at the bottom with the top of the pen, said Wall having a slit near one edge whereby said Wall is mounted upon the pen to form an ink container.

3. An attachment for pens consisting of an inclosing Wall of yielding material, a slit near one edge at one side of said Wall and a slit adjacent said edge the opposite side of said Wall, one of said slits permitting the device to be mounted on a pen, and

Gopies '01 this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents,

' Washington, D. 0." 

